Bridge Safety in Wisconsin
14,498 bridges — 976 Poor condition — avg age 40 years.
Bridge Inventory
| Total Bridges | 14,498 |
| Good Condition | 6,749 |
| Fair Condition | 6,773 |
| Poor Condition | 976 |
| Oldest Bridge | Built 1887 |
| Average Age | 40 years |
Condition Summary
| % Good | 46.6% |
| % Fair | 46.7% |
| % Poor | 6.7% |
Highest-Traffic Poor Condition Bridges in Wisconsin
Poor condition bridges sorted by daily traffic — the most urgent safety concerns.
| Bridge | Condition | Year Built | ADT | Length |
|---|---|---|---|---|
| LRD MITCHELL BLVD | Poor | 1959 | 79,000 | — |
| CTH W MILL RD (CTH S) | Poor | 1967 | 58,500 | — |
| CTH W MILL RD (CTH S) | Poor | 1967 | 58,500 | — |
| E BR WILSON CREEK | Poor | 1959 | 35,500 | — |
| LINCOLN CREEK | Poor | 1958 | 33,971 | — |
| WISCONSIN RIVER 31 | Poor | 1915 | 28,144 | — |
| ST LOUIS R; RR STREET | Poor | 1961 | 28,098 | — |
| STH 24-FOREST HOME AVE | Poor | 1963 | 26,700 | — |
| PHEASANT BRANCH CREEK | Poor | 1956 | 22,500 | — |
| LINCOLN CREEK | Poor | 1936 | 21,845 | — |
| LAKE MONONA | Poor | 1968 | 21,600 | — |
| LAKE MONONA | Poor | 1975 | 21,600 | — |
| LAKE MONONA | Poor | 1966 | 21,600 | — |
| LAKE MONONA | Poor | 1968 | 21,600 | — |
| STH 73 | Poor | 1963 | 21,200 | — |
| OTTER CREEK | Poor | 1988 | 20,800 | — |
| CNW RR | Poor | 1939 | 20,130 | — |
| LRD MISSOURI RD | Poor | 1963 | 19,150 | — |
| KINNICKINNICK RIVER | Poor | 1987 | 19,025 | — |
| LRD W PIERCE ST | Poor | 1933 | 18,735 | — |
Oldest Bridges in Wisconsin
| Bridge | Condition | Year Built | Age | ADT |
|---|---|---|---|---|
| TURTLE CREEK | Poor | 1887 | 139 yrs | 474 |
| BR MCCARTNEY BRANCH | Poor | 1890 | 136 yrs | 240 |
| S BR LITTLE WOLF RIVER | Good | 1890 | 136 yrs | 597 |
| S BR LITTLE WOLF RIVER | Poor | 1890 | 136 yrs | 56 |
| W FK KICKAPOO RIVER | Fair | 1891 | 135 yrs | 205 |
| MILWAUKEE RIVER | Poor | 1891 | 135 yrs | — |
| BLACK OTTER CREEK | Fair | 1892 | 134 yrs | 5,151 |
| SEELEY CREEK | Fair | 1894 | 132 yrs | 27 |
| DRAINAGE RAVINE | Fair | 1896 | 130 yrs | 58 |
| YAHARA RIVER | Fair | 1897 | 129 yrs | 450 |
Bridge Safety in Wisconsin
Bridge condition data for Wisconsin comes from the FHWA National Bridge Inventory. All publicly accessible bridges with a span over 20 feet are inspected at least every 24 months by certified bridge inspectors.